baber/WOPTO huggingface dataset:
Patent GB-1023020-A (GB)
Title: Improvements in or relating to dark slides for photographic film materials
IPC: G03B17/26
Filed: 1963-10-14
Abstract: 1,023,020. Photographic dark slides. DAINIPPON SCREEN SEIZO KABUSHIKI-KAISHA. Oct. 14, 1963 [Oct. 18, 1962], No. 40404/63. Heading G2A. A dark slide has a base plate of magnetic material 13, against which the film can be held by means of magnets 20. Fig. 3 shows the flat base plate, made of or plated with magnetisable material, with the film 14 laid against it. The plate 13 has grooves cut therein in the form of two concentric squares 15, 16, connected with each other by further grooves 17. The whole system of grooves can be evacuated through a pipe connection 24, thus holding the film 14 in a firm flat position against the plate. If a half-tone positive or negative is to be made, a half-tone screen 25 is laid over the film, and is also held flat against the plate by the suction. Initially, the film and screen are loaded into the slide in a dark room, and, when located in the proper positions on the base plate, held there by magnets 20 placed against them. The slide is then closed by a shutter, and transferred to the camera. The pipe 24 can now be connected to a vacuum-producing source, the connector 21 having a light-trap incorporated therein.
Patent GB-1132670-A (GB)
Title: Improvements in or relating to joint assemblies
IPC: F16C11/06
Filed: 1967-09-05
Abstract: 1,132,670. Wear-compensated ball-joint. TRW Inc. 5 Sept., 1967 [16 March, 1967], No. 40579/67. Heading E2F. A wear-compensated ball-joint assembly comprises a housing having a bore in which are situated a pair of eccentric bearing wedge seats 14 having their outer surfaces rotatably seated on the bore wall and inner surfaces embracing and supporting the stud head in a position off-centre of the bore of the housing. A spring-loaded spreader wedge 73 which fits between the broader ends of the wedge seats urges the seats into good bearing contact with both the stud head and the bore wall to take up clearance therebetween. The wedge, which extends the full length of the bore and engages the seats along the full length thereof, is held in place by the threaded plug 64 which is provided with a lubrication duct 68 (Fig. 4, not shown), as is the wedge (74). The joint may be provided with a grease seal (18) and top and bottom housing plates (36 and 38)-see Figs. 2 and 4 (not shown).
Patent GB-1165467-A (GB)
Title: Improvements relating to Vending Machines
Inventor: HANSARD RICHARD LARRY
IPC: G07F5/00
Filed: 1967-09-06
Abstract: 1,165,467. Change-giving mechanism. COIN ACCEPTORS Inc. 6 Sept., 1967, No. 40726/67. Heading G4V. A change-giving mechanism comprises at least two coin-operated switches electrically connected to a credit accumulator, a vend switch actuated in response to the accumulator registering a predetermined value, and a coin-dispensing mechanism including a motor, a motor-actuating switch operated by a cam driven by the motor, and an electromagnet capable of retaining one of the coin-operated switches in an actuated position to maintain a supply of current to the motor in the initial stages of operation. A vending machine for dispensing articles of value 3 units is adapted to receive coins of value 1, 2 and 5 units and give change of one or two 1 unit coins in return for two 2 unit coins or one 5 unit coin. The 1, 2, and 5, unit coins pass down respective channels 13, 14 and 15, to operate selected switches 21, 22 and 23, pulsing a solenoid 62. The latter steps an accumulator ratchet secured to a cam shaft co-operating with switches 76, 78, 80 and 82. After the cam-shaft has been rotated three steps, switches 76, 78 are closed to complete the circuit of solenoid 62 through blades 116, 117 and interrupter switch 83, whereby the solenoid steps the ratchet on to its " home " position. During this movement switch 82 closes to initiate a vend cycle. Change-giving mechanism.-A 2 unit coin operates switch 21 to pulse solenoid 62 and change over contact 104 of switch 80 and contact 76 of switch 114. The coin next operates switch 23 to pulse solenoid 62 a second time through the circuit 104, 106 and 118. A second 2 unit coin operates switch 21 to pulse solenoid 62 a third time, restoring contact 104 to the position shown and changing over contact 78 of switch 113 to initiate the " home " cycle The second 2 unit coin now operates switch 23 to energize a pay-out motor 46 and solenoid 58 through circuit 110, 104, 105 and switch 52. The motor 46 drives a pay-out slide 51 dispensing a one unit coin and rotates a cam 53 cooperating with the switch 52. The solenoid 58 holds switch 23 in its operated position until switch 52 is actuated, whereupon the motor circuit is completed through circuit 90, 91, 36, 57 and 55. A five unit coin operates switch 21 to pulse the solenoid 62 and then engages the switch 22. The latter is held in its operative state by a spring-loaded arm 40. The circuit of solenoid 62 is now completed through 36, 38, 112, 113, 114, 116 and interrupter switch 83 to initiate a " home " cycle. At the end of this cycle, the circuit is completed through 36, 38, 112, 113, 114, 115, 105, 56 and 55 to energize the pay-out motor and dispense a one unit coin. The motor rotates a cam 125 to pivot arm 40 whereby the coin is released. However, the arm 40 snaps back beneath the arm 39 to hold the switch 22 in its operative condition for a second cycle of pay-out motor 46, whereby a second 1 unit coin is dispensed.
Patent GB-1420047-A (GB)
Title: Gas burners
IPC: F23D14/52
Filed: 1973-08-30
Abstract: 1420047 Burners ADAPTOGAS Ltd 23 Aug 1974 [30 Aug 1973] 40804/73 Heading F4T The burner head 13 of a torch or blow lamp has bleed holes 14, 16 to supply two concentric rings 20, 21 of flame retention burners and receives a mixture of air and gas from a venturi 9. A plug valve 5 connects the venturi to air and gas pipes 1, 2 and provides a constant supply to a pilot light 22. A restrictor 9b permits adjustment of the air flow while a groove 25 connects any leakage of air or gas along the plug valve to atmosphere.
Patent GB-1528142-A (GB)
Title: Nuclear fuel elements
IPC: G21C3/20
Filed: 1975-10-07
Abstract: 1528142 Fuel elements GENERAL ELECTRIC CO 7 Oct 1975 [11 Nov 1974] 41018/75 Heading G6C  A nuclear fuel element has a composite cladding of a substrate of zirconium or zirconium alloy having on the inside surface a metal layer at least 0À0002 inch thick of aluminium, chromium, molybdenum, niobium or an alloy thereof. The metal layer of the composite cladding prevents perforations or failures in the cladding substrate from stress corrosion cracking or from fuel pellet-cladding interaction. Methods of manufacturing the composite cladding include electroplating for a metal layer consisting of chromium, bonding an insert tube comprised of one of the above metals (except chromium) or an alloy thereof to a billet of the substrate material extruding the composite followed by a tube reduction process so that a metallurgical bond is established between the metal layer and the substrate, and inserting a close fitting internal hollow sleeve of one of the above metals (except chromium) or an alloy thereof into a billet of the substrate material followed by tube reduction of the assembly, with intermediate anneals if needed, to produce a metallurgical bond between the metal layer and the substrate.
Patent GB-910468-A (GB)
Title: Improvements in apparatus for working electrically conductive materials
Inventor: FEFER GREGORY
IPC: B23H1/02
Filed: 1958-12-19
Abstract: 910,468. Removing metal by electro-erosion. SPARCATRON Ltd. Dec. 4, 1959 [Dec. 19, 1958], No. 41166/58. Addition to 812,012. Class 83 (4). An electro-erosion apparatus of the kind described in the parent Specification, includes a gate controlled rectifying semi-conductor element A supplied with alternating current, whose gate electrode D is supplied by a pulseforming circuit, Fig. 3 (not shown), whereby the rectifier only conducts during part of each negative half-cycle. The element is preferably a gate-controlled silicon rectifier. In another embodiment, Fig. 4, a twelve-phase output derived through a transformer from a three-phase supply has each output phase connected through a gate controlled rectifier with the spark electrode.
Patent GB-1455959-A (GB)
Title: Mobile apparatus for continuous measurement of the resistance of a railway track to lateral thrust
IPC: G01M5/00
Filed: 1974-09-24
Abstract: 1455959 Measuring railway track gauge FRANZ PLASSER BAHNBAUMASCHINENINDUSTRIE GmbH 24 Sept 1974 [24 Sept 1973] 41440/74 Heading B7N Mobile apparatus for the continuous measurement of the resistance of railway track to lateral thrust tending to widen the track gauge comprises two measuring devices 9, 10 which transmit signals S 1 , Sm corresponding to the gauge as determined by rollers 4, 8. The leading device 9 measures the gauge without any lateral thrust but the trailing device 10 measures the gauge when the rail heads are subjected to lateral forces transmitted to the rollers 8 (or similar rollers separate from the measuring rollers) by mechanical springs 11 or by hydraulic or pneumatic means. The signal S 1  is fed to a delay circuit 12 controlled by a signal f so that S1 is passed to an electronic computer 13 at the same time as the signal Sm from the same point on the track. The output from the computer gives the difference in gauge, i.e. the widening #S and this signal is fed to a recorder 16. In an alternative arrangement both devices may operate under the influence of definite but different lateral thrusts. As #S is not always directly proportional to the lateral thrust, more than two measuring devices spaced from each other may be arranged to function under the influence of different lateral thrusts and with appropriate delay circuits, the relationship between gauge widening and lateral thrust may be determined.
Patent GB-1487622-A (GB)
Title: Process for the production of ferrites and magnets
IPC: C04B35/26
Filed: 1974-09-24
Abstract: 1487622 Ferrite bodies SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 24 Sept 1974 41507/74 Headings ClJ and C1A A shaped body of a metal ferrite or ferrites of the formula MO.nFe 2 O 3  wherein M is Sr and/or Ba and n is from 3 to 6À5, having a density of at least 95% of the theoretical maximum density, a crystallite size such that not less than 90% of the crystallites have a diameter of less than 2À5 microns and the average diameter is not greater than 2À5 microns, and having a crystallite orientation of at least 90%, is prepared by (a) forming intimate agglomerates of (i) less than 0À1 micron grains of barium oxide and/or strontium oxide and (ii) less than 0À1 micron grains of ferric oxide, the molar ratio of ferric oxide to divalent metal oxide being 3 : 1 to 6À5 : 1, (b) maintaining the agglomerates at 800‹ to 1100‹ C. for not more than 24 hours to effect at least a partial ferritization and to form crystallites of divalent metal ferrite of less than 0À5 micron average diameter, (c) forming a solid body having a uniform average crystallite size of less than 1 micron diameter from the crystallites by sintering for not more than 2 hours at 800‹ to 1300‹ C. and (d) forming the required shaped body by hot forging the resulting sintered body by applying a pressure of from 1000 to 30,000 p.s.i. at 800‹ to 1300‹ C. Step (c) may involve the application of heat only or both heat and pressure (e.g. 1000 to 30,000 p.s.i.). Step (a) may involve coprecipitating a mixture of decomposable compounds of the metals and then thermally decomposing the precipitate or spray drying or spray roasting a solution of a mixture of salts. The agglomerates may contain minor amounts of Bi 2 O 3 , Al 2 O 3 , ZrO 2 , B 2 O 3 , CaF 2 , SiO 2 , SrSO 4 , PbO and CaSO 4 . In the examples, SrO. 5À4 Fe 2 O 3  and BaO. 6 Fe 2 O 3  are prepared. Magnets prepared from the ferrite shaped bodies may be used in electric motors, loud-speakers and in holding applications.
Patent GB-932799-A (GB)
Title: Improvements in or relating to surface roughness measuring instruments
IPC: G01B13/22
Filed: 1959-12-08
Abstract: 932,799. Roughness gauges. H. W. E. VAN GRODEK, and J. HASING. Dec. 8, 1959 [Dec. 13, 1958], No. 41711/59. Class 40 (1). [Also in Groups XIX and XL (b)] A tracer system for determining geometrical surface criteria of waviness and roughness on a workpiece surface, comprises at least two tracer means T1, T2 (Fig. 6), with ends of different radii and independently axially movable towards and away from the surface, a rail G for guiding longitudinal displacement of the means T1, T2, a transmitter sensitive to axial displacement of each means T1, T2 controlling integrating or recording apparatus and a timer rendering each transmitter operable only during the period its corresponding tracer is scanning the predetermined length l between two selected points of the surface. The apparatus described is used to measure the smoothness height, defined as the shaded area between the curves Pi, Pe (Fig. 3), divided by the length lto be inspected. The curve Pi is the actual profile and is described by a sharp-pointed tracer, while the curve Pe is the course of a tracer with a larger radius of curvature, e.g. one inch. Fig. 14 shows an electrical measuring apparatus employing two tracers T1, T2 supported on pairs of leaf springs N1, N2 and carrying flat steel blades Z1, Z2 respectively arranged between coils E1' E2 and F1, F2 of inductive transducers M1, M2. A timer element switches these transducers successively to the same parts of on electric bridge as the tracers pass over the test length so that a succession of pulses for each transducer is obtained which can be passed to integrating devices, the difference between the two integrals giving a measure of the roughness. Alternatively, the movements of the two tracers may be converted into D.C. voltages acting in opposition so that the difference can be fed into an integrating device to provide a direct roughness figure. An apparatus having four tracers is also described.
Patent GB-1130577-A (GB)
Title: Continuous web reinforcing machine
IPC: D21F11/00
Filed: 1966-09-19
Abstract: 1,130,577. Laminates; reinforcing edges of non-metallic sheet material. CROMWELL PAPER CO. 19 Sept., 1966 [7 March, 1966], No. 41729/66. Headings B5K and B5N. [Also in Division D1] A machine for laying a reinforcing fabric of spaced filaments 33 diagonally upon a continuously moving continuous web of material 39 comprises an endless conveyer 45 which travels around a pair of laterally spaced sprockets 46, 47 and orbits filament carrying eyelets 50 in a plane substantially normal to the direction of web movement, and means for feeding a selvage strand 37 to the moving web along the axis of rotation of each of the sprockets. As shown a rotary creel 10 has a plurality of storage spools 14 of the filament or reinforcing material, e.g. spun glass, a distributing wheel 16, a weaving head 18 (including the conveyer 45), and a movable carriage 20 mounted on rails 21. The discs 12 and wheel 16 are mounted on a shaft 26 rotatable in timed relationship with the movement of the conveyer 45 of the head 18. The filaments run through the wheels 16 and eyelets 50 and are laid on the web 39, which may be on paper and have adhesive applied thereto by a roller 33. A second web of paper 38 is laminated to the web 39, with the filaments 33 between, by rollers 41, 42. The wheeling head 18 is supported on an extension 34 of a fixed shaft. A gear-box 35 is fixed to the extension 34 and mounts spools 36 which provide the selvage strands 37 for the fabric. After leaving the eyelets 50 the filaments 33 are led over guides 66, which may be bent rods as shown in Figs. 1, 2 and 4, or be a segment of a right conical surface, Figs. 6 and 7 (not shown), or be a solid rounded bar, Figs. 8 and 9 (not shown). The guides 66 are mounted on the head 18 at each end thereof and have a forwardly projecting element extending diagonally in the plane of the selvage strands and the nip of the rollers 41, 42 from adjacent the pitch circle of the eyelets 50, at the ends of the head 18, to at least the end of selvage strand delivering tubes 55. A constant sension is thus maintained on the filaments 33 during the turn around the selvage strands. By moving the carriage 20 relatively to the rollers 41, 42 different widths of reinforcement fabric may be made. Within limits, the longer the amount of unsupported selvage strand, the narrower the reinforcement fabric due to the pull on the unsupported selvage strands by the tensioned strands 33.
Patent GB-914435-A (GB)
Title: Improvements in or relating to radio transmitters
Inventor: HEATON-ARMSTRONG LOUIS JOHN
IPC: H03J7/30
Filed: 1960-12-05
Abstract: 914,435. Valve supply circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 5, 1960, No. 41757/60. Class 40 (6). In a radio transmitter a relay 2 disconnects power from the valves in the event of excessive anode dissipation in the final valve 1, being operative upon the difference between the cathode current of this valve and a current proportional to its power output. The final valve 1 feeds coaxial cable 5 via tuned circuit 3 and variable inductor 4, and the connecting conductor passes through a toroidal core 7 on which is a secondary winding 8. This winding produces a voltage proportional to transmitter output current to which is added a voltage proportional to transmitter output voltage, by means of tuned circuit 12, 13, coupled to the cable by capacitor 17 and which feeds into the centre-tap on resistor 9. The combined voltage is fed to a full-wave rectifier comprising diodes 10, 11, provided with a delay bias from source 14. A current proportional to the transmitter output power is derived from the full-wave rectifier and is fed to one winding of relay 2, the second winding of which is in the cathode circuit of the valve 1, being connected in opposition to the first winding. Specification 914,434 is referred to.
Patent GB-1325218-A (GB)
Title: Method and apparatus for manufacturing dipole  electro-magnets
IPC: H01F6/06
Filed: 1971-09-09
Abstract: 1325218 Making electromagnets; angular bending KERNFORSCHUNG mbH GES FUR 9 Sept 1971 [29 Sept 1970] 42083/71 Headings B3A and B3E [Also in Division H1] A superconductive coil 1 (Fig. 1) is wound from superconductive rectangular wire 2 in several layers 3 in plane AA on a winding device 4 carried by a winding head; the device comprising parts 4, 5 which are hinged together at 6. PVC segments 7 of thickness corresponding to a layer 3 are carried by part 5 slotted at 8 longitudinally for retention by bolts 9 and are shaped to determine the curve of the winding of the coil. After winding the plural layers the coil is wetted with a slowly setting synthetic resin, and is bent about 6; the layers sliding one over the other together with the associated slotted segments, thus allowing traction stresses in the windings to be reduced, and the coil to be subsequently bonded as a unit by setting of the resin. A dipole magnet (Fig. 2) comprises a GRP winding support casing 10 having peripheral cooling slots 11 connected to other cooling slots 13 separating individual coil assemblies 12, wedgedly received in stepped grooves of the support casing and enclosed by mechanical reinforcing strips distributed over the lengths of the electromagnets. A beam tube may extend through the central bore.
Patent GB-1500488-A (GB)
Title: Telephone equipment
IPC: H04Q5/24
Filed: 1975-12-24
Abstract: 1500488 Ringing circuit POST OFFICE 24 Dec 1975 [27 Sept 1974] 42123/74 Heading H4K A tone ringing circuit is arranged to provide a two tone ringing signal from a transducer, the tones alternating at the frequency of an A.C. ringing current applied to the circuit. Incoming A.C. ringing current is full wave rectified in circuit 3 and passes via a smoothing and limiting circuit 4 to a Darlington switching circuit 6 which causes power from capacitor 13 to energize an oscillator 5 when a predetermined threshold voltage has been exceeded. A transistor 33 is switched off and on by alternate half cycles of ringing current to vary the frequency of oscillator 5 by switching a capacitor 30 in and out of circuit. In an alternative embodiment, not shown, an inductance may be switched in and out of the oscillator circuit. Tinkling due to dialling pulses on the line, e.g. in party line systems, is prevented by the circuit 6, the transitory dialling pulses being of insufficient power to switch on the Darlington circuit 7. Switch 35 can be used to select a high volume tone, a steadily increasing tone, e.g. by switching in thermistor 36, a low volume tone, or no tone at all.
Patent GB-1219459-A (GB)
Title: Improvements in or relating to variable inductors
IPC: H01F21/12
Filed: 1968-09-05
Abstract: 1,219,459. Heating inductors. COMPAGNIE FRANCAISE THOMSON-HOUSTONHOTCHKISS BRANDT. 5 Sept., 1968 [5 Sept., 1967], No. 42364/68. Heading H5H. [Also in Division H1] The inductance of a variable, high-frequency, heating inductor is adjusted by rotation of the coil 1 about its axis A, a movable contact element 3 being provided, having a shape resembling a cylinder with rounded ends and supported so that one of its ends is in permanent contact, as at 5, with at least one turn of the coil and the other in contact, as at 6, with a conductive wall 2, to which one end of the coil is also connected. If the element is arranged to contact a single turn an insulating guide, e.g. a two-pronged fork, is affixed to it in order to hold it in engagement with the coil conductor. Alternatively the element may be arranged to run between two turns so as to contact both of them (Fig. 4, not shown). In a further embodiment two separate elements respectively contacting adjacent turns are provided. The or each element is pivoted with its axis approximately perpendicular to A in a U-shaped insulating plastics holder 7, the or both of which are supported by an articulated metal framework 10, 11, 14 pivoted at 15, 16 and provided with a counterbalance weight 24. The element is urged against the coil by a spring 25 and is preferably arranged so that the line joining the points of contact 5 and 6 is not radial with respect to the axis A (Fig. 2, not shown). Pellets of a metal having a good conductivity but low coefficient of friction, e.g. silver containing a small quantity of carbon, may be soldered to the element at the contact points. The element is cooled by passing a jet of compressed air through it. The coil conductor may be a copper tube, through which cooling fluid is circulated. If the coil is to be connected to a capacitor the wall 2 may be one of the metal plates of that capacitor. A common wall may be used for two coils connected together either in series or parallel.
Patent GB-1425135-A (GB)
Title: Injection site in a flow conduit screw-securing device and a method of screwing a screw in a bore
IPC: A61M39/04
Filed: 1973-09-11
Abstract: 1425135 An injection site in parenteral inhision apparatus BAXTER LABORATORIES INC 11 Sept 1973 42618/73 Heading A5R A self sealing needle penetrable injection site in a conduit e.g. in a parenteral infusion apparatus comprises an elastomeric tube 22 lowering part of a fluid flow path and kept in compression by an encompassing housing 20. The tube has a greater free outer diameter than the base of the tubular housing 20 in which it is radially compressed. Preferably the elastomeric tube has an incompressed outer diameter exceeding the housing bore diameter by at least 10%. Tubes 12, 14 have ends 16, 18 secured in the housing by a solvent or by heat sealing. The bore of the tubes 12, 14 is equal to the bore of the compressed tube 22. The transverse diameter of a needle access port 24 is desirably not more than 60% of the outer diameter of the compressed tube 22 which may be of silicone rubber or latex. The tubes 12, 14 are of plasticized polyvinyl chloride and the housing 20 may be of a rigid material e.g. ABS plastics which provides a needle stopping wall 25, or of polyethylene rendering the port 24 unnecessary.